SECOND REPORT ON YARTOTIS irANTTRES AT CHISWICK. 131 
The plants in box 3 were the first to flower ; those in box 2 had on 
the whole the smallest number of flowers. 
As to the roots the least degree of vigour was observable in boxes 
land 2. The ammo]iia salts induced a medium development ; the 
nitrate of soda a high development : the mineral and ammonia salts 
the highest, and the mineral and nitrate a high medium root- 
development. 
In comparison with the results obtained the previous season, it 
may be stated that the fluctuations of growth were much less. 
Boxes 1 and 2 presented much the same characters as before. 
Box 3 was more uniformly superior. 
Box 4 never attained so high a development as in the preceding 
season. 
Box 5, on the other hand, never sank so low ; but both it and box 
6 showed the same general good development as last year. 
The root -development aff'ords the greatest contrast with that of 
last year. Box 1 is the same relatively as before ; box 2 but little 
superior to box 1, while last year the roots in this box attained the 
maximum development. 
The roots in box 3 were medium instead of high ; those in 4 
were higher than previously ; those in 5 were the highest of all 
in point of general development, instead of being nearly the 
lowest, as was the case last year. 
In box 6 the diff'erence was not great between the condition of 
the roots in the two seasons. 
It is worth noting that while the root-development last season 
was greatest under the influence of mineral manures, and nearly 
lowest under that of mineral and nitrate combined, in the present 
season the conditions were almost precisely reversed. Whether 
this was accidental, or whether it was referable to altered condi- 
tions of temperature, humidity, or the like, is not determinable 
from existing evidence. 
